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(x - y)^2 < (x - y) ?

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Intern
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(x - y)^2 < (x - y) ?  [#permalink]

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New post 14 Jul 2017, 09:27
1
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

60% (00:55) correct 40% (01:19) wrong based on 20 sessions

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\((x - y)^2\) < (x - y) ?

(1) (x - y) < 0
(2) (x + y) < 0

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Re: (x - y)^2 < (x - y) ?  [#permalink]

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New post 14 Jul 2017, 09:40
(x-y)^2 < (x-y)

We can see that this can only happen when (x-y) lies between 0 and 1 hence we have to prove that
0<(x-y)<1

(1) says (x-y) is negative ...sufficient to solve the answer

(2) (x+y) is negative ...not sufficient

Hence A


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(x - y)^2 < (x - y) ?  [#permalink]

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New post 14 Jul 2017, 13:00
1
papagorgio wrote:
\((x - y)^2\) < (x - y) ?

(1) (x - y) < 0
(2) (x + y) < 0

papagorgio , you've posted two DS questions in the PS forum...This one, and Nicky's test scores. :-)
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Re: (x - y)^2 < (x - y) ?  [#permalink]

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New post 14 Jul 2017, 13:07
genxer123 wrote:
papagorgio wrote:
\((x - y)^2\) < (x - y) ?

(1) (x - y) < 0
(2) (x + y) < 0

papagorgio , you've posted two DS questions in the PS forum...This one, and Nicky's test scores. :-)


Ah man I didn't scrutinize the section I was posting in.. I'll try to move them.

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Re: (x - y)^2 < (x - y) ?  [#permalink]

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New post 15 Jul 2017, 05:35
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Top Contributor
[quote="papagorgio"]\((x - y)^2\) (x - y)[/color]
Since we cannot answer the target question with certainty, statement 2 is NOT SUFFICIENT

Answer: A

Cheers,
Brent

--== Message from the GMAT Club Team ==--

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This discussion does not meet community quality standards. It has been retired.


If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

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Re: (x - y)^2 < (x - y) ?   [#permalink] 15 Jul 2017, 05:35
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